Management of the endodontically treated tooth. Part I: Concept for restorative designs

Removal resistance of glass-fiber and metallic cast posts with different lengths

“…Nevertheless, clinical longevity of a post-and-core restoration is influenced by many factors, including the direction of occlusal load (21), thickness of remaining dentin (4-6,9), design of the dowel (1,11,17,21) and the type of post (9,10,25).…”

“…These lengths are indicated in situations where the ideal post length (two thirds of the root) cannot be reached (1,8). When 10 mm post-length was applied in a root of 15 mm (66.6% or two thirds of root length), the vertical force necessary for dislodgment was greater than in the 6 mm post-length.…”

“…This procedure requires partial removal of the root canal filling to prepare adequate space for the post and retention of the intracanal post is determined by mechanical features (1)(2)(3)(4)(5).…”

Three-year Clinical Evaluation of Cuspal Coverage with Combined Composite–Amalgam in Endodontically-treated Maxillary Premolars

“…Lateral excursive forces can shear the remaining cusps or cause vertical root fracture, leading to periodontal surgery or extraction. 5 In addition, loss of the protective feedback mechanism following pulp removal may contribute to tooth fracture. 6 Thus, restoration of an endodontically-treated tooth is a critical step in finishing or complementing endodontic treatment.…”

“…1,[4][5]7 Full metal-ceramic crowns have been recommended as a way to provide good esthetic results in premolars. Tooth preparation for this crown requires a substantial reduction in tooth structure, so that a post is needed to provide core retention.…”